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Finding the Fourth Proportional to 143,868.76, 215,803.14 and 60,763.48

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Solution

The fourth proportional to 143,868.76, 215,803.14 and 60,763.48 is: 91,145.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,868.76 : 215,803.14 = 60,763.48 : x
  2. Step 2: Convert to fraction form
    143,868.76/215,803.14 = 60,763.48/x
  3. Step 3: Cross multiply
    143,868.76x = 215,803.14 × 60,763.48
  4. Step 4: Simplify right side
    143,868.76x = 13,112,949,781.33
  5. Step 5: Solve for x
    x = 13,112,949,781.33/143,868.76
  6. Step 6: Final answer
    x = 91,145.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.